Update GitVersion version specification to 6.1.x in CI workflow

This change updates the version specification for GitVersion in the CI workflow from '6.0.x' to '6.1.x' to ensure compatibility with the latest features and improvements.

Signed-off-by: Victor Chang <vicchang@nvidia.com>

Author: mocsharp

.github/workflows/ci.yml

@@ -53,7 +53,7 @@ jobs:
       - name: Setup GitVersion
         uses: gittools/actions/gitversion/setup@v3.1.11
         with:
-          versionSpec: '6.0.x'
+          versionSpec: '6.1.x'
 
       - name: Determine Version
         id: gitversion